package org.example.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Scanner;
/**
 * 注销用户功能:JDBC执行DML语句[DELETE]
 * 请输入用户名: Tony
 * 返回结果: 注销成功 | 注销失败;
 * DELETE FROM userinfo WHERE username=''
 */
public class JdbcDemo3 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username = scanner.nextLine();
        Statement statement = connection.createStatement();
        String sql = "DELETE FROM userinfo WHERE username = '"+username+"'";
        int i = statement.executeUpdate(sql);
        if (i!= 0){
            System.out.println("注销成功");
        }else {
            System.out.println("注销失败");
        }
        connection.close();
    }
}
